⬆️ Update dependency pytest-cov to v6

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
pytest-cov (changelog)	5.0.0 -> 6.0.0

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Release Notes

pytest-dev/pytest-cov (pytest-cov)

v6.0.0

Compare Source

• Updated various documentation inaccuracies, especially on subprocess handling.
• Changed fail under checks to use the precision set in the coverage configuration.
  Now it will perform the check just like coverage report would.
• Added a --cov-precision cli option that can override the value set in your coverage configuration.
• Dropped support for now EOL Python 3.8.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (beee8a4) to head (d643535).
Report is 66 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main      #370   +/-   ##
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  Coverage   100.00%   100.00%           
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  Files           10        10           
  Lines          197       197           
  Branches        25         6   -19     
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  Hits           197       197           

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